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Alnus rubra is the largest species of alder in North America and one of the largest in the world, reaching heights of 20 to 30 metres (66 to 98 ft). The official tallest red alder (as of 1979) stands 32 m (105 ft) tall in Clatsop County, Oregon (US). [7]
Red alder is the Pacific Northwest's largest alder and the most plentiful and commercially important broad-leaved tree in the coastal Northwest. Groves of red alder 25 to 50 centimetres (10 to 20 in) in diameter intermingle with young Douglas-fir forests west of the Cascades, attaining a maximum height of 30 to 33 m (100 to 110 ft) in about ...
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Alnus: alders; Alnus acuminata: Andean alder Betulaceae (birch family) Alnus alnobetula: green alder Betulaceae (birch family) Alnus cordata: Italian alder Betulaceae (birch family) Alnus cremastogyne: long-peduncled alder Betulaceae (birch family) Alnus formosana: Formosan alder; Formosa alder Betulaceae (birch family) Alnus fruticosa ...
Alnus glutinosa, the common alder, black alder, European alder, European black alder, or just alder, is a species of tree in the family Betulaceae, native to most of Europe, southwest Asia and northern Africa.
Cunonia capensis, the butterspoon tree, butterknife tree, African red alder, red alder or rooiels, is a small tree found in the afromontane forests of southern Africa, and along rivers. It is grown as an ornamental in gardens for its attractive glossy foliage and its clusters of tiny, scented, white flowers.
Alnus cordata, the Italian alder, [1] [2] is a tree or shrub species belonging to the family Betulaceae, and native to the southern Apennine Mountains (Campania, Basilicata and Calabria, mainly on western mountain sides) and the north-eastern mountains of Corsica. [3]
The route then leads into the ancient woodland, the forest swamp, which is crossed on a footbridge. Among the Red Alders are tussocks rich in herbs. The trail continues through The Prehistoric Forest, which the museum planted in 1964 to illustrate the ecological succession in the forests of Denmark from the Stone Age until today.